Equalizing-truck.



A. El. BROWN.A EQUALIZINGQRUGK.

APPLIUATIONHLBD 1mm 15 isos.

' Patented Dec. 29, y1908. f

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A. E. BROWN. BQUALIZING TRUCK. APPLIOATION FILED 11111215, 1908.

Patented 1m29, 190s.

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A. B. BROWN. Y'

EQUALIZING TRUCK. `APPLICATION FILED JUNE 15, 1908.

907,964. Patented Dec.29,1908.

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ZQ- T A. E. BROWN. BQUALIZING TRUGK. APPLICATION FILED JUNE 15, 1908.

Patented Deo. 29, 1908.

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.. TNN mwN ATTORNEY A. E. BROWN.

VYEQUALIZING TRUCK. APPLmATIoN FILED JUNE 15, 190s.

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INV/ENI ATmR/vfr u which 1 hereby declare t UNITED 'smears-rm @mea .ALEXANDER E. BROWN, OF CLEVELAND,'OHIO, ASSIGNOR TO THE BROWN HOISTING MACHINERY'COMPANY, OF CLEVELAND, OHIO.

i EQUALIZING-TRUCK.

Specification of Letters Patent.

Patented Dec. 29, 1998.

Application inea rime 15,1908.n serial N. 43,677.

Cleveland, in the county of Cuyahoga and State of Ohio, have invented a new and useful Improvement in E ualizing-Trucks, of e following to bea .full, clear, and exact description, reference parts in every instance are being had to the accompanying drawings as a part of the specification,

designated by the same letters.

Said truclr belongs to the general kind used to sustain and carry heavy superstructures, like bridge-tramways, unloaders and cranes, that travel, on surface rails from one point of service to another. -Here there is, neces- C sai-ily, a high degree of compression `on the wheel-loads, which it is important, in'every contingency, should be equally distributed among the several supporting wheels. It is not so diilicult a problem to provide for such equal vdistribution with certain forms oi truck, as those characterized by two, four or eight wheels, for instance, for the reason that a common frame-work can be employed when an even numberof wheels, either in pairs or tandem, are used, in which the primary compression center can be located without dithculty. This is not so readily accomplished,

however, when three wheels in tandem, or, y three pairs oi wheels are to be used. Nevertheless, there are certain conditions, or situations, where, the particular Weight to be supported, accordingl to accepted rules and'caleulations, require three tandem wheels or three couples of wheels, rather than any other number, and it is therefore desirable toascertain the most advantageous manner of arranging these so las to insure the saine stress upon each wheel under every circumstance.

A truck arrangement oi this nature is the purpose and object of the present invention.

In the drawings Figure 1 represents the end sill and lower part of the legs of an unloader su ported by six wheels laccording to the form erein described. Fig. 2' is an enlarged view of such a truck. Fig. 3 is a sectional plan view on the lines a' not' Fig. 2. Fig. 4 is an end view on the lines y y, of Fig.

2. Fig. 5 1s asectional end view on the lineswherein the saine g Fig. 8 is a sectional plan view on the lines i i) o, ot Fig. 2. Fig. 9 is a side elevation of l frame-plates used. Fig.` 1() is a diagraml matic end view of the relative position of said fra1ne-plates,'when in place.' Fig. 11 is a plan View of said plates in their o erative lace. Fig. 12 is a plan .view of a hol ow pinearin detail, and, Fig. 13 is an end view thereot.

Referring now`inore particularlg. to said figures, S (Figs. 1J and 2) is a sill in an unloader structure, on the end of which rest the two legs L, of said structure. The sill here is assumed to he oi the usual box-giider type, generally used in such connections, with said legs riveted .to its top flange. Beneath said sill and legs, respectively are six-Wheel supporting trucks, similar, one to the other, in all respects, and each made up ot threel pairs of wheels connected with a traine-work to be described.-` Referring, therefore, to but one of said trucks, tor the purpose of description, said pairs consist respectivellt' ol" the wheels W1 and W2, VW and Vi, andfWf' `and YW. These wheels arev severallj,l keyed to the axles 4A1, A2 and A3, which pass through and turn within bearings or housings D1, I)2 and D3 to which are-bolted two pairs of parallcllj'.' related ira.nieplates or pieces P1 and P2, and P3 and P4. As shown these platesorv .ieee-.s are oi arclrlike contour. They are o' steel or like substance, and, as also shown, are duly reint'orccd, and stitlencd by angle-irons, and subordinate plates for the purpose. plates l?1 and P2, constituting` 'one oi such pairs are higher and longer than the plates P3 and P4 constituting the other ot said airs. N ear the upper part or' P and Pl are holes or apertures O, and., at a relativehv lower part of P3 and P4, are similar holes or apertures O1, tor At t e .lower edges of said plates are squared recesses R1, in the plates F1 and P2, and R and R3, in the plates P3 andi.

l The recesses R1, R2 and R3 should be so inters aced,one with respect to the others, that tie recesses R1, in the plates l1 and P2 will always be at points that 'are twice the distance from the vertical plane ot the point or aperture'O on a horizontal line, that the point or aperture O1 is Jfrom O. As will be readily understood, the aperture O1 must always have its vertical through the middle point between the recesses R2 and R3, or, rather, that the recesses R2 and R3 must purposes that will hereinafter appear.

^ recesses r, (Fig, 6)

, is to transmit 'l in their destined places, said castings C, C1 35 with theaperture O1.

- are held together by the l(Fig. 1l).

. in vthe .several recesses 'R1 etc., and cxterd and is duly secured, in place, by the inplate L. Through the aperture O1 a ho low steel pin-shaft N passes, which is provided With iianges F, whereby said pin-shaft is exteriorly bolted, in said position, to the plate P3. The plates P1 and P3, which engage and rest on said shaft, around their semi-circular recesses referred to, are thereby given .a desirable support. A driving shaft K passes horizontally through said pin-shaft N, and projects outwardly therefrom at each end of One of these projecting ends engages a bevel-gear G, and, the other a spur-gear G1, for driving said trucks, containing the spurgears G2 and G3. The s ur-gears (l2 and G3 are, respectively, keye' to the projecting ends of the axles A3 and A3 and thus make the corresponding wheels W3, IV and W and l/V'the drivers of the truck.

Suitable power connections for the operation are indicated in the drawings.

By the form of frame-work for a sixwheeled truck above described it is plain that a full equalization and distribution of stress will occur under all conditions. Should, for instance, both wheels W1 and W3, composing the front pair, encounter an obstacle, in equal degree, (as a rail cross-wise of the track) said wheels in their plates P1 always be equidistant from and on each'side l midway of such vertical. P1 and P2 must l each also have a semieircular recess of suitable dimensions to register and correspond The normal arrangej ment for these plates, in the device under consideration, is in pairs, as stated, the pair P3 and P1 being exterior to and partially` inclusive of the pair P1 and P2 (Figs. 9 and 10).- Said pairs are held together, the last named, cross-pieces? and p1 and a separaten channel c, that pass between and are bolted or otherwise fastened to the opposite plates composing the pair, and, the pair P3 and P'1 plate cross-piece p2, and channel cross-piece c1, ikewise extending between and fastened to the same. flanged castings C, C1 tween and are bolted the said side flanges f,

Certain and @also extend beto said plates through the casting C between P1 and P2 and C1 and C2 between P3 and P4 Said castings are of the socket type, and are provided with central vertical to leffect an engagement with the sill S. This engagement lis aceomplished by means of T-shaped castings M that are fastened erosswise of the sill immediately above the several pairs of wheels and which penetrate and engage said vertical recesses. The object, as will become evident, any side thrust of the wheels 'through thebox-bearings D1, D2 and D3 and castings C, C1 and C2, to the sill itself. vThenv the point and connections at O, as a center, and the resistance and reaction, will be transmitted through said plates to the pin N on which said plates rest around their semi-circular recesses, and, by reason of the or ballbearing protuberance T on the upper fact that O1 is at the middle point between surfaces of box-bearings D1, D2 and D3 (Figs. the pair of wheels W3 W and W5 W 6, and, of 6, 7 and These box-,bearings are inserted. the ability of said front pair to rock and adjust themselves around I, the stress must be equally divided up between the three pairs of wheels, and no one of them will be un equally subjected to the saine. So, also, it the second or intermediately arranged pair,

and C2 are in Contact with and upon a rocker cross-wise, severally, between the plates P1 etc., being provided with vertical sidegrooves g to permit them to be so inserted, the vertical edges of said recesses occupying said grooves. The bearings are given such P3 land P4,rencounter an obstacle or inequality vertical dimensions that they willicoine into in rail surface the adjusting or compensating contact or engagement with the castings C l rotation, in such case, will first be about the etc., at said protuberance T, before the upper axle A3. This movement and strain will orizontal edges of the recesses R1 etc., are j raise,.or tend to iaise the pin shaft N and, met, therebj leaving a desirable clearance, by reason of the frame-plates P1 and P2 being immediately below such edges, at the points seated thereon, a rotating of thc latter around the pin-casting I must occur to a dereferied to, to allow a rocking action of said ,l box-bear1ngs in their described engagements j gree that will equally distribute said strain. j It but one wheel of a pair meets a stone, or

with thecastings C etc.

The axle A1 passes through the bearing D1 j other obstacle, then the tendency is for suoli and engages the Wheels W1 and WZ; the ,l wheel, to lift against its mate, and a lateral axle A2 similarly passes through the bearing l rotating movement of the frame to occur. D2 and engages the W3 and W4 with one end lfThis is compensated for, at once, by reason of the axle last referred to projecting beyond j? of the rocker-bearing feature T, which perthe wheel W4, and, the axle A3, in like man- ,I mits a side-rocking to take place, under the ner passes through the bearing D3 and enl conditions assumed, with the result that the gages the wheels W5 and W, projecting be- .l sill, and the structure it supports, will meanyond W3. while maintain a perfect equilibrium.

Having now described my said invention In the arrangement shown a hollow pinwhat I claim and desire to secure by Letters casting I passes through the aperture O and coupling the same together the sill S, thereby Patent is:

llfl

1. .In a six-wheel truck for supporting a hoisting and conveyingl machine, or other structure, the combination'of two pairs of said wheels kconnected to a frame-member, in parallel opposite relations to each other, at points equidistant' from the vertical plane of the compression center of said member, and, a second lever-like frame-member, rotatively connected to said machine or structure, and having its inner arm-portion in bearing or engagement with said first named frame-member, at or on a lincwith said compression center, and having a third pairof said wheels connected to the other or forward. ar1n-portion thereof at a point that is twice the distance from the lvertical plane of said rotative connection that the distance from said last named `plane is to the vertical plane of said compression center, substantially as shown and described 2. In a six-wheel truck for supporting a hoisting and conveying machine, or other structure, the combinationof two pairs of said wheels connected to 4a framemember by rocking connections in parallel opposite relations to each other, at points equidistant from the vertical plane 'of the compression center of said niember,jand, a second leverlike frame-member, rotatively connected to said machine, or truck, and Vhaving itsv inner arm-portion in bearing, or engagement with said iirst named franie-inember, at or on a line with said compression center, and having a thirdpair of saidwheels, likewise connected to theother or forward arm-portion thereof, at a point that is twice. the distance from the verticalplane of said rotative connection, that the distance from said last named plane is to the vertical plane of said compression center, together with suitable laterally-rocking sup OrtsA and connections between said pairs an said machine or strncture substantially as shown and described.

3. In combination with a vr hoisting-.and conveying` machine, "or other structure, a six-wheel tr'iick, made up of two frame-members, in one of which are mounted two pairs of said Wheels, at points eqiiidistant from the vertical-plane that passes through the compression center of said member, and, in the forward end of said second member,

which isro'tatively connected to said machine or structure is mounted the remaining l l l l l i i I pair of said wheels', at a point that is twice the distance from the vertical lane of said rotative connection that the istance from said last named plane is to the vertical plane of said compression center, said second inember'being pivoted to vsaid machine or structure, and being in rotative engagement or bearing with said first named member at' said coin ression center, substantially as shown an described.

4. In, a six-Wheel structure for supporting a hoisting and conveying machine or other structure, the' combination of one pair .of said wheels, joined by suitable rocking connections to lever-like frame-plates, or members, provided for the purpose, that are 1'0-- tatively connected to said machine or structure; similar plates or members for the remaining pairs to which said pairs are in like manner Joined, the said plates and members being in rotative engagement, or connection, one with the other, at the vertical that extends midway between said last named pairs, the said -irst named pair being located 'in its said frame or mem er, at a point thereof ywhich is' twice the distance from the vertical plane of said rotative connection that the..

distance from said last named plane is to the vertical plane of said compression center, substantially as shown and described.

5. In a truck for supporting a hoisting and conveying machine, or other structure, the combination of a wheel therefor joined, by suitable rocking connections to a lever-like frame-plate or member, rotatively connected to said machine, or structure; two other wheels likewise connected to a second similar plate or' member, the said plates or niembers being in rotative engagement, one with the other, on the vertical that extends midway between said two last named wheels, the said first named wheel being located, i-n

i its said frame, at a point thereof` that is twice the distance from the vertical plane of said .rotative'connection that the distance from said last named plane is to the Vertical plane of said compression center of said two remaining wheels, substantially as shown and described.,4

ALEXANDER e BROWN. In presence of- RICHARD B. SHERIDAN,

. L. P. SIPPs. 

